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SDF-1α (human, recombinant), [125I]-, 25µCi

Stromal cell-derived factor 1 alpha (SDF-1α; CXCL12), labeled with 125I. SDF-1α binds the CXCR4 receptor.

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Part Number Unit Size List Price Your Price Quantity
NEX346005UC 5 µCi 744.00 USD
NEX346025UC 25 µCi 1999.00 USD
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We offer radioligands and radiolabeled biomolecules to use as tracers, for radioimmunoassays (RIAs), for autoradiographic visualization, or for performing saturation and competition radioligand binding assays to determine receptor expression levels (Bmax), dissociation constants (Kd), association and dissociation rates (kon and koff), and inhibitor constants (Ki) for a variety of receptors. We develop our radioligands to the highest specific activity possible and provide high purity resulting in low non-specific binding products. Each of our ultra-pure radiolabeled compounds is fully characterized for pharmacological action and validated in binding assays.

Radiochemicals remain the most sensitive method for probing binding biology; yielding unprecedented sensitivity gives results that technicians and scientists can trust. For over 50 years, PerkinElmer has been a leading supplier of New England Nuclear (NEN) radiochemicals, liquid scintillation cocktails, vials and nuclear counting detection instruments.

References for NEX346:

  1. Asano, S., Kitatani, K., Taniguchi, M., Hashimoto, M., Zama, K., Mitsutake, S., Igarashi, Y., Takeya, H., Kigawa, J., Hayashi, A., Umehara, H., Okazaki, T. (2012), Regulation of cell migration by sphingomyelin synthases: sphingomyelin in lipid rafts decreases responsiveness to signaling by the CXCL12/CXCR4 pathway. Mol Cell Biol, 32 (16): 3242-3252.
  2. Howard, O. M. Z., Korte, T., Tarasova, N. I., Grimm, M., Turpin, J. A., Rice, W. G., Michejda, C. J., Blumenthal, R. and Oppenheim, J. J. (1998), Small molecule inhibitor of HIV-1 cell fusion blocks chemokine receptor-mediated function. J Leukoc Biol, 64: 6–13.


Concentration 45.7 µCi/mL
Detection Method Radiometric
Fresh Lot Days Third Monday of each month
Label Position Nominally Labeled
Product Brand Name NEN Radiolabeled Ligands
Radioisotope I-125
Radionuclide 125I
Receptor Type Chemokine
Shipping Condition Dry Ice
Special Ordering Information This is a radioactive product - shipping address must have a license to receive radioactive materials.
Therapeutic Area CNS & Neurologic, Inflammation
Unit Size 25 µCi

Resources, Events & More

Resource Type File Name File Format
Technical Note Low Volume Handling Suggestions for Iodine-125 Labeled Compounds PDF  177 KB
Flyer Using the NENSure Packaging System from PerkinElmer PDF  447 KB